Stopping Potential vs Intensity

Q.

A photo electric setup uses a 100 watt bulb of blue colour. If I bring the bulb closer to the plate what will happen to the stopping potential and why? According to classical model, it will become more ___________ (positive/negative)

1. Negative

2. Positive

Q.

When the light source is kept 20 cm away from a photo cell, stopping potential 0.6 V is obtained. When source is kept 40 cm away, the stopping potential will be

1. 0.3 V

2. 0.6 V

3. 1.2 V

4. 2.4 V

Q. According to the wave model, energy of the light falling on the plate depends only on the amplitude of light and not on frequency.

1. True
2. False